September weather forecastOkoppe, Japan
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Okoppe, Japan, with an average temperature varying between 13°C (55.4°F) and 19°C (66.2°F).Temperature
At the start of September, Okoppe's average high-temperature reaches a refreshing 19°C (66.2°F), subtly different from the preceding month. An average low-temperature of 13°C (55.4°F) is noted during the nights in September in Okoppe, Japan.Humidity
The average relative humidity in September is 80%.Rainfall
In Okoppe, in September, it is raining for 15.4 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, in Okoppe, there are 145.9 rainfall days, and 766mm (30.16") of precipitation is accumulated.Snowfall
In Okoppe, Japan, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September in Okoppe, sunrise is at 04:50 and sunset at 18:04. On the last day of the month, sunrise is at 05:24 and sunset at 17:10 JST.
Sunshine
In Okoppe, the average sunshine in September is 7.6h.UV index
In Okoppe, Japan, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Okoppe, Japan
- Average high temperature in September: 19°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The months with the lowest average high temperature are January and February (-3.9°C).
- Average low temperature in September: 13°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (-8.8°C).
Average pressure in September
Okoppe, Japan
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is October (1014.9mbar).
The month with the lowest atmospheric pressure is July (1008.7mbar).
Average wind speed in September
Okoppe, Japan
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest month (with the lowest average wind speed) is July (9.1km/h).
Average humidity in September
Okoppe, Japan
- Average humidity in September: 80%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Okoppe, Japan
- Average rainfall in September: 76mm
The wettest month (with the highest rainfall) is August (110mm).
The driest month (with the least rainfall) is April (40mm).
Average rainfall days in September
Okoppe, Japan
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is August (17.9 days).
The months with the least rainy days are January and February (4.5 days).
Average snowfall in September
Okoppe, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (289mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Okoppe, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (25.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Okoppe, Japan
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in September
Okoppe, Japan
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is May (13.9 days).
The month with the least sunshine days is December (2.8 days).
Average UV index in September
Okoppe, Japan
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, March, November and December (UV index 1).
Average cloud cover in September
Okoppe, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility in September
Okoppe, Japan
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The months with the lowest visibility are January, February, March, June, July, August and December (8km).
